RELATIONSHIP OF THE DEVELOPMENT OF RADIATION DAMAGE AND REPAIR ON THE REGENERATIVE ACTIVITY OF TISSUES OF RANA TEMPORARIA TADPOLES

Journal Article · Sun Mar 01 04:00:00 EST 1964 · Bull. Exptl. Biol. Med. (U.S.S.R.) (English Transl.)

DOI:https://doi.org/10.1007/BF00798835· OSTI ID:4036490

Gronskaya, N F

Rana temporaria tadpoles aged 20 days were exposed to 300 or 600 r of x rays. The degrees of damage and recovery in the epithelium of the cornea, tail, and regenerating portion of the tail were studied, and differences were found that were related to the initial rate of cell division. The change of mitotic activity was used as a criterion of the extent of the injury and of the rate of the subsequent repair. The fall in mitotic index was more abrupt and pronounced in the cornea and epithelium where the rate of mitosis was relatively high. After radiation repair processes were more rapid in the tissues in which mitotic activity is normally high; nevertheless the recovery was incomplete. Regenerative activity was more distinctly shown after irradiation with a dose of 300 r; differences between the reactions of the various tissues to irradiation were less well shown with a dose of 600 r. (auth)

• Research Organization: Central Scientific Research Inst. of Medical Radiology, Leningrad
• Sponsoring Organization: USDOE
• NSA Number: NSA-18-019781
• OSTI ID: 4036490
• Journal Information: Bull. Exptl. Biol. Med. (U.S.S.R.) (English Transl.), Journal Name: Bull. Exptl. Biol. Med. (U.S.S.R.) (English Transl.) Vol. Vol: 55
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

AGE
ANIMAL CELLS
ANIMALS
BIOLOGY AND MEDICINE
CORNEA
CYTOLOGY
EYES
FROGS
IRRADIATION
MITOSIS
RADIATION DOSES
RADIATION EFFECTS
RADIATION INJURIES
RECOVERY
REGENERATION
STANDARDS
TISSUES
VARIATIONS
X RADIATION